Cut blocks of sandstone wait to extracted from the sandstone quarry at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

Cut blocks of sandstone wait to extracted from the sandstone quarry at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

A wire saw makes multiple cuts in a block of sandstone at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

A wire saw makes multiple cuts in a block of sandstone at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

A wire saw makes multiple cuts in a block of sandstone at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

A wire saw makes multiple cuts in a block of sandstone at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

A worker shovels chunks of sandstone from tracks in order to move block of sandstone into place for cutting at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

A worker shovels chunks of sandstone from tracks in order to move block of sandstone into place for cutting at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

A worker writes measurements for multiple cuts in a block of sandstone at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

A worker writes measurements for multiple cuts in a block of sandstone at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

Cut and uncut blocks of sandstone sit stacked inside the fabrication area at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

Cut and uncut blocks of sandstone sit stacked inside the fabrication area at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

A worker makes a cut in the side of a sandstone block in the hand fabrication area of the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

A worker makes a cut in the side of a sandstone block in the hand fabrication area of the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

Cut blocks of sandstone wait to extracted from the sandstone quarry at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

Cut blocks of sandstone wait to extracted from the sandstone quarry at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

A worker uses a forklift to stack slabs of sandstone at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

A worker uses a forklift to stack slabs of sandstone at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

Cut blocks of sandstone wait to extracted from the sandstone quarry at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

Cut blocks of sandstone wait to extracted from the sandstone quarry at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

A large block saw blade cuts into a piece of sandstone at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

A large block saw blade cuts into a piece of sandstone at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

A worker pries apart multiple cuts in a block of sandstone to free the tension on a wire saw at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

A worker pries apart multiple cuts in a block of sandstone to free the tension on a wire saw at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

A large block saw blade cuts into a piece of sandstone at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

A large block saw blade cuts into a piece of sandstone at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

The silhouette of a worker using a forklift to move a slab of sandstone is seen at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images

The silhouette of a worker using a forklift to move a slab of sandstone is seen at the Cleveland Quarries facility in Vermilion, Ohio, U.S., on Friday, Feb. 1, 2013. Spending on U.S. construction projects climbed more than forecast in December, showing the housing industry is sustaining gains that may lift the economy. Photographer: Ty Wright/Bloomberg via Getty Images